The node can be a simple configuration or consisting of different types of modes can be created.
For example, the server has four hard drives. Two of them are SATA, and the others are SSD. In this case, create two different types of nodes. The first node contains two SATA drives, and the second node contains two SSD drives.
This configuration can extend more; check the samples.
Go to Server > Nodes and create a node based on the provided explain.
Next step: Create VM